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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: chips/p9/procedures/hwp/perv/p9_sbe_check_master_stop15.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* EKB Project */
/* */
/* COPYRIGHT 2015,2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* The source code for this program is not published or otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* IBM_PROLOG_END_TAG */
///
/// @file p9_sbe_check_master_stop15.H
/// @brief Check if the targeted core (master) is fully in STOP15
///
// *HWP HWP Owner : Greg Still <stillgsg@us.ibm.com>
// *HWP FW Owner : Bilicon Patil <bilpatil@in.ibm.com>
// *HWP Team : PM
// *HWP Level : 2
// *HWP Consumed by : SBE
///
/// High-level procedure flow:
/// @verbatim
/// - Read the STOP History Register from the target core
/// - Return SUCCESS if::
/// - STOP_GATED is set (indicating it is stopped)
/// - STOP_TRANSITION is clear (indicating it is stable)
/// - ACT_STOP_LEVEL is at the appropriate value (either 11 (0xB) or 15 (0x15)
/// - Return PENDING if
/// - STOP_TRANSITION is set (indicating transtion is progress)
/// - Return ERROR if
/// - STOP_GATED is set, STOP_TRANSITION is clear and ACT_STOP_LEVEL is not
/// appropriate
/// - STOP_TRANSITION is clear but STOP_GATED is clear
/// - Hardware access errors
/// @endverbatim
// -----------------------------------------------------------------------------
// Includes
// -----------------------------------------------------------------------------
#include <p9_sbe_check_master_stop15.H>
#include <p9_pm_stop_history.H>
#include <p9_quad_scom_addresses.H>
// -----------------------------------------------------------------------------
// Function definitions
// -----------------------------------------------------------------------------
// See .H for documentation
fapi2::ReturnCode p9_sbe_check_master_stop15(
const fapi2::Target<fapi2::TARGET_TYPE_CORE>& i_target)
{
FAPI_IMP("> p9_sbe_check_master_stop15");
fapi2::buffer<uint64_t> l_data64;
uint32_t l_stop_gated = 0;
uint32_t l_stop_transition = p9ssh::SSH_UNDEFINED;
uint32_t l_stop_requested_level = 0; // Running Level
uint32_t l_stop_actual_level = 0; // Running Level
// Read the "Other" STOP History Register
FAPI_TRY(fapi2::getScom(i_target, C_PPM_SSHOTR, l_data64));
// Extract the field values
l_data64.extractToRight<p9ssh::STOP_GATED_START,
p9ssh::STOP_GATED_LEN>(l_stop_gated);
l_data64.extractToRight<p9ssh::STOP_TRANSITION_START,
p9ssh::STOP_TRANSITION_LEN>(l_stop_transition);
// Testing showed the above operation was sign extending into
// the l_stop_transition variable.
l_stop_transition &= 0x3;
l_data64.extractToRight<p9ssh::STOP_REQUESTED_LEVEL_START,
p9ssh::STOP_REQUESTED_LEVEL_LEN>(l_stop_requested_level);
l_data64.extractToRight<p9ssh::STOP_ACTUAL_LEVEL_START,
p9ssh::STOP_ACTUAL_LEVEL_LEN>(l_stop_actual_level);
#ifndef __PPE__
FAPI_DBG("GATED = %d; TRANSITION = %d (0x%X); REQUESTED_LEVEL = %d; ACTUAL_LEVEL = %d",
l_stop_gated,
l_stop_transition, l_stop_transition,
l_stop_requested_level,
l_stop_actual_level);
#endif
// Check for valide reguest level
FAPI_ASSERT((l_stop_requested_level == 11 || l_stop_requested_level == 15),
fapi2::CHECK_MASTER_STOP15_INVALID_REQUEST_LEVEL()
.set_REQUESTED_LEVEL(l_stop_requested_level),
"Invalid requested STOP Level");
// Check for valid pending condition
FAPI_ASSERT(!(l_stop_transition == p9ssh::SSH_CORE_COMPLETE ||
l_stop_transition == p9ssh::SSH_ENTERING ),
fapi2::CHECK_MASTER_STOP15_PENDING(),
"STOP 15 is still pending");
// Assert completion and the core gated condition. If not, something is off.
FAPI_ASSERT((l_stop_transition == p9ssh::SSH_COMPLETE &&
l_stop_gated == p9ssh::SSH_GATED ),
fapi2::CHECK_MASTER_STOP15_INVALID_STATE()
.set_STOP_HISTORY(l_data64),
"STOP 15 error");
// Check for valid actual level
FAPI_ASSERT((l_stop_actual_level == 11 || l_stop_actual_level == 15),
fapi2::CHECK_MASTER_STOP15_INVALID_ACTUAL_LEVEL()
.set_ACTUAL_LEVEL(l_stop_actual_level),
"Invalid actual STOP Level");
FAPI_INF("SUCCESS!! Valid STOP entry state has been achieved.")
fapi_try_exit:
FAPI_INF("< p9_sbe_check_master_stop15");
return fapi2::current_err;
} // END p9_sbe_check_master_stop15
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